Question

(x+1)(x-2) find the value when the value of x is -1​

Answer 1

(x+1)(x-2)

(-1+1)(-1-2)

Distribute and multiply

-1 x -1 = 1

-1 x -2 = 2

1 x -1 = -1

1 x -2 = -2

1 + 2 - 1 - 2 = 0

The value is 0

Hope this helps